Coaster-brake for bicycles, motor-cycles, or the like.



I M. J. WALD.. l GOASTBR BRAKE FOR BIUYGLES, MOTOR CYCLES, OB TEE LIKE.v

APLIGATION FILED JAN. 2B, 1911. 1

Patented Apr. 8, 1913.

22am Maid M. I. WAM). GOASTBB BRAKE FORBNYGLES, MOTOR GYGLBS,

0R THB LIKEf 4APYLIUAHOH EILBD JANfZB, 1911.

Patented Ap?. 1913.

2 SHEETS-SHEET 2.

narran retratar ernten MICHAEL J. WLD, F EUGENE, OREGON.

Application ied Jennery 28, 1311, Serial No. 605,203.

Be it. known that i, lviicnann il. lVxlio, a citizen of the United States, residing at Eugene, in the county of Lane and State of Oregon, have invented certain nenv and useful Improvements in Coaster-Brakes for Bicycles, Motor-Cycles, or the Like; and l do herebjvlv declare the follouung to be av full, clear, and exact description of the invention, such as will enable others skilled in the art to .which it. appertains to maire and use the same.

This invention relates to new and useful improvements in coaster brakes for bicyclesJ motorcycles or the like, and has for an object the provision of' a device of this character which will he positive in action, cornparatively simple and cheap to manufact-ure,

reliable and ecient in use, and readilj,Y operated.

With the above and this invention resides of construction, formations, combinations and arrangements of parts to be hereinafter more particularly described, claimed and illustrated in the accompanying drawing, in Which- Figure l is a longitudinal sectional view ot' my invention; Fig'. 2 is a sectional view on the line 2 2 of lFig. 1; Fig, 3 is a sectional view on the line 3 3 of Fig. l; and Figs. 4, 5, 6, 7 and 8 are detail perspective views of the operating sleeve, brake shoe, bur` sprocket and axle detached.

Referring' -to the drawing by characters of reference, the numeral 1 designates generally the shell or outer hnh of a. Wheel or 'the like, provided lwith the customary annular spoke-supporting Hannes Q, in which are secured the spokes 8 of the wheel, the outer ends of which attached to the customary rim (not shown). ri`he outer ends of the shell are provided with halves 4 of ball races, adjacent one of which is formed an inwardly extending ianp'e 5, upon one face ot which is formed a series of ratchet teeth tl, adapted to ennage the teeth T forn'led upon the slidahle our S, the inner periphery of which is threaded as at 9 for engagement with a worin 10 extending inwardly within the shell 1, from one tace of a sprocket wheel 1l. .k shoulder 12 toi-ined upon this sprocket wheel 11 adjacent the worm 10, and is adapt ed to engage the olset side. ot the balls 13 carried within the ahow-mentioned 'nali' oi' other objects in view,

the ball race 1. The odset side of this.

in the novel featuresy Specification of Letters Patent.

l l l j, I l

sprocket 11 is provided with a centrally lol-v cated groove 14, adapted to receive a number of ball bearings 15, the opposite sides of which rest within a hall race 16 carried hy a bearing sleeve 17, located upon one end of the axle 18 and retained in place by a Washer" 19 and lock nut Q0 respectively. p

The bur S isprovided with yan outer peripheral groove 21, adapted to receive a spring Q2, which serves normally to hold the teeth T of thesaid bur in spaced relation to the teeth G of the inwardly projecting tienne rIhe end of the bur opposite to the one which is toothed, as at 6, is provided with a series of similar teeth 23, adapted to engage teeth 24, supported upon a disk 25 mounted upon one end of a sleeve "iti carried by the axle 18 when the bur 8 is in a position away from the flange 5. The sleeve 26 is provided with a series of raised hearing rings 27, while oneside of the said sleeve is flattened, as at 28, and adapted to engage a roller 29, which is interposed loeween said flattened face and the inner Wheel ot the shell 1.

A brake shoe 30 surrounds the sleeve 26 and roller 29, and is provided in one edge with a longitudinally extending substantialljv V-shaped slot 31., into which the roller 29 is adapted to be forced upon the proper rotation of the sleeve 26, forthe purpose of spreading the said brake shoe and forcing it into engagement with the inner surface of the shell 1, which operation is aided by the means of a series extending,T grooves 32, which are formed within the brake shoe for the purpose .of rendering the material composed therein resilient.

rlhe axle 18 is provided with a pair of diametrically located oppositely extending lugs 33, which are adapted to engage recesses 34 formed in the end of the brake shoe 30, for the purpose of'keyingthe same to tlnl said axle and causing it to rotate therewith.

A suitable bearing' cap 35 is located upon the end of the axle 18, and is provided With one-halt 36 ol a ball race, which engages the ball hearings 37, mounted in the opposite half fl of the said race. This cap is retained upon the axle against displacement by means of a washer 38 and nut 39.

From the foregoingdisclosure it Will be manifest that when the bur is in engagement with the teeth 6, the said shell or hub Patented Apr. 8, 1913. ,I

.of an axle, a hnh shell provided with an 1 will be lrotated upon lhopropeir turning' of the Sprocket Wheel ll. 'lhe opposite moif'enient of the Said sprocket 11 will canse the bui' S lo inove into engagement with the spring Q'Z, whieh will eanse the shell o1 hul) l to turn loosely upon the axle 1S, while upon a further bael\'\\'a1 d movement ol' the Said sprocket ll the lnnl 8 will he lhi'own into engagement with lhe leelh l nl' lhr,l disk E25, and cause lhe loewe lll lo i'olale. forcing; the roller 2f) into lhe V-shapetl slot 3l ol: the ln'alie shoe 30,. hanging the saine lo expand and li'ielionally engage the inner surface of the shell or hnh l ainlln'm'enl lheI same from rotating.

Fi'rnn the il'oiegoiin; lliavlnnlne il will he obvious that a nab-tei: ln'ake of lhe eliaiaetei previously described is provided foi wliieh will :tullil all of the necessary i'equifeinents of such a deviee.

Having thus nlly described thib` invention, what I Claim as; new and desire to secure by Letters Talenty is:

l. In a brake nneehanisin the eonihination of an axle, a huh shell, hearings hel-Ween said axle and shell, a sleeve on said axle llatlened on one side, an expansihle split cylindrical hrakdshoe disposed on said sleeve and having a loi'igitudinal onlwaidly tapered slot extending throughoutils length, a spread ing i'olleil for said brake-Shoe disposed in seid slolx and on the liallened side ot Said sleeve, and means nionnleil on Said, axle 'for actuating said sleeve.

2. In a bale 'meelmnism the eon'ibinalion internal flange, bearings between said axle and Shell, a sleeve on said axle lflattened on one side and provided with. a disk, an expansiblo split Cylindrical lnale-sh0e disposed on Said l l l l l l l l l l l l sleeve'and having a longitudinal outwardly tapered slot extending`4 throughout its length, a spreading roller for said brakeshee disposed in Said slot and on the flattened aide ol` said sleeve, and means mounted on said axle for aetuating said sleeve, Said means comprisingl a. sprocket on` said axle [n'ovideil with an exlenfled huh having a wohin. and a slidalile lnn engaged hy Said worn: and engaging; al ilal oppoaite ends said llange oi' dish'.

il. ln a ln'alie niil'hanis-ln llie voniliinalien ol' an axle` a hnh :shellfin'ovidefl willi a del. verza on ils inner lat-e, heal-ings helneen said axle and shell` a hnll engage' lispoaad within said ehell and pigovided willi a peripheral groove, a spring dispoeed in said. recess and engaging saidgroove to hold Said hui: in spaced relation to the huh, and 1n aina forl Shii he; said bnl' into and oniy of engagement with the hub.

4l. ln a brake n'ieehanisni the eolnlninatimi of an axle, a hah shell, hea/rings between said axle and shell, a sleevel on said axle lawine,- a Series of raised hearing rings, Vlatlened on one side, an expansible split eyliinli'ieal brake-shoe disposed on said sleeve and having' a longitudinal ontwaydly lapin-ed slot extendingtluonghonly itslenglih, a spreading roller for said brake-shoe (lispoeed in said slet. and on the flattened side of said sleeve, and inean monnled on said axle Vloi' actuating said sleeve. l

In testimony whereof l a'llix my signature in presence of two witnesses.

( BUCHAEL l Vl/'ALll Wlitnesses:

Louis E. BEAN, i

A. BEAN. 

